We today face the risk of software patents being approved in the EU because not enough parliamentary members will be showing up to vote. Due to this it is important for those of us who oppose software patents to make sure EU parliament members see the damage software patents cause, so they realize it is important to be there to vote providing the needed absolute majority. But sending out a clear message is also important for the process of patent reform in the US and other places who have fallen into the trap of introducing them.

Politicians don't listen to hundreds of similarly templated letters. If you want to launch a real campaign you need everybody to write their own stuff to have any actual impact.

As for the patents, you cannot get the patent for desktop wallpapers. You have to be the first person to implement the idea in order to get it so your reasoning is a little flawed. That being said, software patents are not the best way to do things. There does need to be something to protect companies and programmers from people stealing their work but patents and copyrights aren't the answer in this case.